Watch alarm



Nov. 24, 1925. 1,562,978

' W. MILLER WAT CH ALARM Filed 0012 1924 INVESTOR Patented Nov. 24, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM KILLER, OF NEW YORK, N. Y.

' WATCH ALARM.

Application filed October 4, 1824. Serial No. 741,556.

Alarms, of which the following is the specification.- The device, the-sub ect of this app11ca-- tion is intended as an alarm for awakening a sleeper or calling attention to appolntments or for. other general purposes of alarms. V

The objects of this invention are to provide a device of the general nature above referred to and one wherein the useful objects will be accomplished, but in the usual way that this alarm, rather than havlng an audible alarm is entirely inaudible.

It is well known that audible alarms,

when used to awaken sleepers having the disadvantage that they arouse those who do not desire to be aroused, but who may be sleeping within sound of the alarm.

To overcome this disadvantage, my alarm device is secured to the body of the person whom it is desired to arouse and the usual gong is omitteda In its stead I provide a device that will contact directly with the body of the wearer, causing a sensation of sufficient difference and magnitude to awaken the sleeper.

Another object of the invention isto provide a very small alarm device, one that can be worn without discomfort by the sleeping person or if worn forthe attention directing purposes during awakening hours, will not appear ridiculous or even unattractive.

The means for accomplishing the above objects and others not specifically referred to and the construction and operation of my device will be fully set forth as the specification progresses and the accompanying drawing should be referred to for a complete understanding of the specification which follows.

In the drawing c Fig. 1, is a plan view, partly in section.

Fig. 2, is a ront plan view.

Fig. 3, is a plan View of the back.

Fig. 4, is an enlarged view of certain gears.

Fig. 5, is an enlarged view of the ratchet and ratchet wheel.

therefore,

Fig. 6 is an enlarged view of the alarm controlling mechanism. Similar reference numerals indicate like parts in all the figures where they appear.

My invention really consists in placing an inaudible alarm in a watch and for that reason I have shown an ordinary wrist watch the casing of which is, in Fig. 1, indicated at 10 and under the plate 11, is for the most part, arranged the ordinary watch mechanism. It isnot necessary to'make material changes in the watch mechanism and I have,

not shown the time keeping mechanism in detail, merely showing the escapement 12 and one large gear at 13, to indicate the relative position of these parts.

Secured to the casing 10 are the ordinary loops 14 and 15, to which a wrist or body strap 16 is secured.

The winding stem 17 of the watch is arranged at one side of'the center or rather, nearer one strap loop than ordinarily placed. This to provide room for a second stem 18, which is the winding and setting stem for the alarm mechanism.v

The alarm mechanism is provided with a spring and a winding gear for the spring. The gear is shown at 19 and the spring is arranged directly under this gear. An intermediate gear 20 is arranged upon a shaft 21, which shaft also supports an intermediate pinion shown in dotted lines at 22, this pinion being in mesh with the gear 19.

A ratchet 23 is arranged upon a shaft 24 and a pinion 25 shown in dotted lines, is secured to the shaft 24 and is in mesh with the gear 20. The teeth of the ratchet wheel 23 are arranged upon one face of the wheel, in other words, this gear is a crown gear and the pallet 26, mounted upon a suitable supporting pin 27 is agitated by the rotation of the crown gear 25.

Secured to the ratchet 26 is an arm 28, upon which is also secured a hammer 29. It will be noted that the arm 28 is of a peculiar shape, having an offset 30.

The movement of the arm will be an in and out movement or a movement upon the line of the axis of all of the time gears and for a purpose that shall appearlater.

The stem 18, previously referred to, is provided with a compound gear, both portions of which are beveled at different angles. This gear is shown at 31 and is arranged in Fig. l, as in contact with a small gear 32 which operates a shaft upon which is secured a worm for winding the alarm spring. A second bevel gear 34 is in line with the gear 31 and when the stem 18 is pushed inward, the gear 31 will engage the gear 34 for setting the alarm.

The setting mechanism is clearl shown in Fig. 6, where the shaft 35 is t e shaft upon which the gear 34 is secured. Upon this shaft I arrange a in 36 and a hand 37, the hand 37 travelling over the small dial 38 shown in Fig. 2.

Upon the shaft 35 is loosely mounted a gear 39 which is in mesh and is rotated by a gear 40 secured to the hour hand shaft 41 of the watch. A spring pressed pin 42 retains the gear 39 outward and a projection 43 upon the pin 42 engages the hammer 29.

When by the movement of the watch, the gear 40 rotates the gear 39 until the slot 44 receives the pin 36, the gear 39 will move forward along the projection 43 of the spring pressed pin 42, to release the hammer 29, at which time the alarm mechanism will operate, causing the hammer to reciprocate rapidly in and out.

As shown in Fig. 3, and Fig. 6, the back plate 45 of the watch casing is provided with a recess 46, having a perforation 47, through which the hammer 29 may reciprocate. The recess is provided to shield the point of the hammer, when it is at rest. If, therefore, the watch is secured upon the wrist and the alarm wound and set, the releasing of the alarm will cause the hammer to move rapidly in and out of the casing, delivering a series of quite firm blows upon the wrist of the person wearing the watch.

It is not my intention that the hammer 29 should be sharp. It should, however, be tapered, so as to deliver an attention demanding blow, rather than a soft touch which would result from a flattened hammer head.

To make the alarm inoperative, I provide a projection 48 extending through the casing of the watch, adjacent the alarm winding knob 18. This member 48 may extend under or engage the offset portion 30 of the lever 28 and I provide a plate 49 operatin in notches 50 in the casing, to secure the silencinglever against accidental displacement.

It will be understood that modifications as to position and size may be made to allow my device to operate with different types of Watches and that other changes and modifications may be made within the scope of the appended claims without departing from the principle or sacrificing the advantages of the invention.

Having carefully and fully described my invention, what I claim and desire to obtain is 1. An inaudible alarm including a fiattened cylindrical watch casing having a perforated recess in the back thereof, a stem projecting from one edge of said watch casing, for winding and setting the time mechanism thereof, an alarm mechanism within said watch, a second stem projecting from said casing and adjacent to said first mentioned stem for winding and setting said alarm and a hammer operated by said alarm mechanism and through said back and normally within the said recess when at rest, said hammer being adapted to be projected beyond the walls of said recess to contact with a body upon which said watch is placed, only when said alarm mechanism is operated.

2. A device of the character described comprising a wrist watch having a cylindrical case, an open face, a closed back and securing means, a plurality of winding and setting stems projecting both from one edge of said case and springs adapted to be wound by said stems, one of said springs driving the watch mechanism and an alarm mechanism driven by the other said spring a perforated recess in said back and a blun' vibratory hammer, having an enlarged body portion closing .said perforation and operating therein, said hammer being agitated by said alarm mechanism.

3. An alarm mechanism for watches comprising a spring, a ratchet wheel operated by said spring and having its teeth on the face of the ratchet wheel and extending parallel with the axis thereof, a ratchet contacting with said teeth, an arm secured to said ratchet and a sliding member extending through the casing and adapted to engage an offset in said arm, to retain said arm against movement and a sliding means operated by said sliding member for retaining said sliding member against accidental displacement.

Signed at the city, county and State of New York, this 26th day of September,

WILLIAM MILLER. 

